Two polar bears playfighting, Alaska.

Two young polar bear cubs playfighting on the snow along Alaska's Arctic coast. One cub rears up with its mouth wide open, looming over the other, which crouches low and turns its head to the side. The body language is pure play. There is no real aggression here, just two siblings burning energy and testing each other the way young bears do.

Playfighting is an important part of polar bear development. These bouts help cubs build strength, coordination, and the social skills they will need later in life, whether competing with other bears over food or establishing dominance during the breeding season. The size difference between the two is visible. The standing cub appears to be the male, slightly larger, while the crouching one is likely his sister. Even at this age the physical differences between the sexes are starting to show.

Scenes like this are common during the fall gathering of polar bears along the Arctic National Wildlife Refuge coast, when bears congregate on the barrier islands waiting for sea ice to form. With little else to do, young bears spend hours wrestling and chasing each other across the snow. For photographers, these interactions are some of the most dynamic and engaging moments to capture during a polar bear trip to ANWR.

Photo © copyright by Carl Donohue.

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